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Surging idle 200 1986

uid 27's pic
posted by  Art Benstein on  Thu Jul 10 05:53 CST 2003
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last visit: Fri Oct 17 20:10 CST 2014
[RELATED]

Yes, like Kenric says, focus on cleaning the throttle body first if not already done. Make sure the TPS (Throttle Position Switch) clicks when the throttle is allowed to close-- sometimes a tech will adjust the throttle stop screw (not the bypass knob you're adjusting) to make up for another problem affecting idle. If TB is clean and TPS working, the sticky goo in the IAC Kenric mentioned is often the culprit for surging. It works like an electric motor limited to 3/4 turn, so it acquires the usual motor problems with brush and commutator wear. Sorry if previous posts covered this...
--
Art Benstein near Baltimore






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